[OpenIndiana-discuss] dd command - block size argument

[Atiq Rahman]

> OI specifically mentions bs=4M for OI images on the installation guide.
> I was just not sure what to put as block size for dd write: 4M or 1M. I
went with 1M.
>
> # bs=1M per Perp AI
> sudo dd bs=1M if=./omnios-r151054.usb-dd of=/dev/sda status=progress
conv=fsync

Found some interesting details on block size
  https://www.reddit.com/r/linux/s/zxlf9ubwJO

seems pretty obvious.

Cheers!

Atiq


On Mon, Aug 25, 2025 at 1:16 PM Atiq Rahman <atiqcx at gmail.com> wrote:

> Hi,
> > Does OI work on this system then?
> OI text installer boots fine on this system:
>
> > Does it get as far as the reading unix and the boot archive messages?
> I will check booting once more before replying this. For now, all I
> remember is, right after I hit enter after choosing multi-user mode or
> single user mode, as it tries to bring up the text installer screen, it
> freezes with a large cursor on top-left of the screen and nothing happens
> or responds after.
>
> Tried the image on an old machine after it failed on this system. That old
> machine booted the text installer just fine.
>
> So, I guess the image writing was fine. OI specifically mentions bs=4M for
> OI images on the installation guide. I was just not sure what to put as
> block size for dd write: 4M or 1M. I went with 1M.
>
> # bs=1M per Perp AI
> sudo dd bs=1M if=./omnios-r151054.usb-dd of=/dev/sda status=progress
> conv=fsync
>
> I also tried the omnios bloody image, repros exact same problem.
>
>
> On a different note, I know I shouldn't be asking this here but do you
> guys know how to set up 'wrap at 80 characters' on gmail without using a
> desktop client app?
>